Heat exchanger tube sheet
A, tube sheet heat exchanger splice butt joints should be 100% of the ray or ultrasonic testing, according to JB4730-ray inspection of not less than grade Ⅱ, or ultrasonic testing in grade Ⅰ qualified.
In addition to stainless steel, the splice should be made after the tube plate stress relief heat treatment.
B, composite heat exchanger tube sheet welding
a) heat exchanger should be made before surfacing welding technology assessment;
b) primary heat exchanger surface surfacing materials to be processed and re-layer material (before drilling) on the surface, should be JB 4 7 3 0 for surface testing, test results may not have cracks, into the vent, and should be consistent Grade Ⅱ defects display;
c) the use of heat exchanger tubes and tube sheet shall not be welded plus bridge the gap between the tube sheet welding method of welding.
Partition groove seal surface should be flush with the annular sealing surface, or slightly below the annular sealing surface (controlled at 0.5 mm or less).
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Keywords: reactor, heat exchanger, pressure vessel
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2011年12月12日星期一
Stainless steel reactor maintenance
Stainless steel reactor maintenance
1, the reactor in operation, should carefully check for anything abnormal, in normal operation, the board shall open the cover and touch the terminals to avoid electric shock.
2, the measuring instrument should be calibrated regularly to ensure the accuracy and reliability of reactor work.
3, the heating rate should not be too fast, slow pressure should be, especially the stirring speed, only slowly increases the speed. In case of power failure, should betransferred back to zero speed control knob.
4, no fast reactor cooling to prevent excessive thermal stress damage.
5, reactor operation, the coupling between the lid and kettle water jacket cooling water must pass in order to control the operating temperature magnet, to avoiddemagnetization.
6, is strictly prohibited under high pressure reactor beat twist connector bolts andnuts.
7, membrane reactor explosion in the use of a period of time, aging, fatigue willreduce the burst pressure may also be attached to the media, the impact of itssensitivity, should be changed regularly, usually once a replacement to preventfailure.
8, with a pressure reactor disassembly is prohibited.
9 reactor for the packing seal stuffing box seal leakage is found in severe (adjustedpacking gland can not be resolved), you should stop running until the pressure within the reactor pressure and lubrication after discharge, replace the packing.
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Keywords: reactor, heat exchanger, pressure vessel
1, the reactor in operation, should carefully check for anything abnormal, in normal operation, the board shall open the cover and touch the terminals to avoid electric shock.
2, the measuring instrument should be calibrated regularly to ensure the accuracy and reliability of reactor work.
3, the heating rate should not be too fast, slow pressure should be, especially the stirring speed, only slowly increases the speed. In case of power failure, should betransferred back to zero speed control knob.
4, no fast reactor cooling to prevent excessive thermal stress damage.
5, reactor operation, the coupling between the lid and kettle water jacket cooling water must pass in order to control the operating temperature magnet, to avoiddemagnetization.
6, is strictly prohibited under high pressure reactor beat twist connector bolts andnuts.
7, membrane reactor explosion in the use of a period of time, aging, fatigue willreduce the burst pressure may also be attached to the media, the impact of itssensitivity, should be changed regularly, usually once a replacement to preventfailure.
8, with a pressure reactor disassembly is prohibited.
9 reactor for the packing seal stuffing box seal leakage is found in severe (adjustedpacking gland can not be resolved), you should stop running until the pressure within the reactor pressure and lubrication after discharge, replace the packing.
More Information at Weihai Huanyu Chemical Machinery Reactor
...
Sources from Stainless steel reactor maintenance
Keywords: reactor, heat exchanger, pressure vessel
2011年12月6日星期二
The importance of checking the heat exchanger
The importance of checking the heat exchanger
Check the heat exchanger is very important. Through the heat exchanger inspection,to determine the actual state of the heat exchanger, to identify degradation and failureof its location, shape, and reasons to take the necessary measures to carry outrepairs to prevent further deterioration of its development, to avoid all non-unitplanned downtime.
Sometimes even if the heat exchanger itself is not severely damaged, also due tosmall leaks caused by heat transfer medium channeling through, resulting in product failure; water coolers leaking pipes, oil or other materials will fleeing into the coolingdevice water system or boiler feed water system, the safety device on all the basicprocess operating conditions and deadly threat; heat exchanger descaling layer if notcleared in time, will also affect the media flow and heat transfer efficiency, the efficiency of heat transfer equipment directly to the deterioration of device reduced ability to increase energy consumption.
In addition, the heat exchanger is usually a pressure vessel, shell and head of itsbearing capacity, the pressure vessel from the point of view of safety requirements, the same should be a high priority. Thus, the heat exchanger for periodic inspection,is imperative.
...
Sources from The importance of checking the heat exchanger
Keywords: reactor, heat exchanger, pressure vessel
Check the heat exchanger is very important. Through the heat exchanger inspection,to determine the actual state of the heat exchanger, to identify degradation and failureof its location, shape, and reasons to take the necessary measures to carry outrepairs to prevent further deterioration of its development, to avoid all non-unitplanned downtime.
Sometimes even if the heat exchanger itself is not severely damaged, also due tosmall leaks caused by heat transfer medium channeling through, resulting in product failure; water coolers leaking pipes, oil or other materials will fleeing into the coolingdevice water system or boiler feed water system, the safety device on all the basicprocess operating conditions and deadly threat; heat exchanger descaling layer if notcleared in time, will also affect the media flow and heat transfer efficiency, the efficiency of heat transfer equipment directly to the deterioration of device reduced ability to increase energy consumption.
In addition, the heat exchanger is usually a pressure vessel, shell and head of itsbearing capacity, the pressure vessel from the point of view of safety requirements, the same should be a high priority. Thus, the heat exchanger for periodic inspection,is imperative.
...
Sources from The importance of checking the heat exchanger
Keywords: reactor, heat exchanger, pressure vessel
2011年11月3日星期四
Regenerative heat exchanger
Regenerative heat exchanger
Regenerative heat exchanger is used for regenerative heat exchanger equipment.Built of solid filler to build heat storage. Fire brick with bricks and other general grid(sometimes with metal wave, etc.).
Heat exchanger - Heat transfer in two phases. The first stage, hot gases through the fire grid, the firewill heat to build up the grid and storage. The second stage, the cold gas through thefire grid, grid to accept the savings of the heat of fire is heated. These two phasesalternate. Often used interchangeably with two accumulator, that is when the hot gas into a device, the cold gas into another device. Commonly used in metallurgical industry, such as open-hearth steel regenerator. Also used in chemical industry, such as gas furnace or combustion chamber, air preheater, synthetic oil plants in theregenerative cracking furnace.
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Sources from Regenerative heat exchanger
Keywords: Reactor, heat exchanger, pressure vessel
Regenerative heat exchanger is used for regenerative heat exchanger equipment.Built of solid filler to build heat storage. Fire brick with bricks and other general grid(sometimes with metal wave, etc.).
Heat exchanger - Heat transfer in two phases. The first stage, hot gases through the fire grid, the firewill heat to build up the grid and storage. The second stage, the cold gas through thefire grid, grid to accept the savings of the heat of fire is heated. These two phasesalternate. Often used interchangeably with two accumulator, that is when the hot gas into a device, the cold gas into another device. Commonly used in metallurgical industry, such as open-hearth steel regenerator. Also used in chemical industry, such as gas furnace or combustion chamber, air preheater, synthetic oil plants in theregenerative cracking furnace.
...
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Keywords: Reactor, heat exchanger, pressure vessel
Introduction to pressure vessels
Introduction to pressure vessels used
Pressure vessel pressure vessel use is widespread. It is in the petrochemical industry, energy industry, research and military, and other sectors of national economies play an important role in the device. Generally from the pressure vesselcylinder, head, flange, sealing elements, openings and over, constitute the majority, six containers bearing the body. Also, comes with safety devices, meters, and the role of different production processes within the piece.
As the sealed pressure vessel, pressure, and media and other reasons, with the explosion, the burning fire and endanger personnel, equipment and property andenvironmental pollution accidents. Currently, countries around the world to be asimportant supervisory inspection products, specialized agencies designated by the State, in accordance with regulations and standards prescribed by the Statesupervision and inspection and technical inspection.
...
Sources from Introduction to pressure vessels
Keywords: Reactor, heat exchanger, pressure vessel
Pressure vessel pressure vessel use is widespread. It is in the petrochemical industry, energy industry, research and military, and other sectors of national economies play an important role in the device. Generally from the pressure vesselcylinder, head, flange, sealing elements, openings and over, constitute the majority, six containers bearing the body. Also, comes with safety devices, meters, and the role of different production processes within the piece.
As the sealed pressure vessel, pressure, and media and other reasons, with the explosion, the burning fire and endanger personnel, equipment and property andenvironmental pollution accidents. Currently, countries around the world to be asimportant supervisory inspection products, specialized agencies designated by the State, in accordance with regulations and standards prescribed by the Statesupervision and inspection and technical inspection.
...
Sources from Introduction to pressure vessels
Keywords: Reactor, heat exchanger, pressure vessel
2011年10月26日星期三
Pressure vessel problems with the plumbing
Pressure vessel problems with the plumbing
Butt joints of pressure vessels for all (100%) or partial (20%) non-destructive testing: When using ray detection, according to the quality of its transparency not less than Class AB, which qualified for the Ⅲ grade level, and there is no welding is not allowed through; when taken ultrasound, its qualified level Ⅱ.
Of the GB150, GB151 and other standard provisions of all (100%) non-destructive testing pressure vessels, pressure vessels, the third category, the weld coefficient ⒈ 0 the pressure vessel and can not withstand internal and external inspection or testing of pressure vessels, the butt joint for all (100%) non-destructive testing: When using ray detection, according to the quality of its transparency not less than Class AB, the eligibility level for the grade Ⅱ; when using ultrasonic testing, its qualified level Ⅰ.
Equal to the nominal diameter greater than 250mm (or nominal diameter less than 250mm. The people is greater than the wall 28mm) took over the butt joints of pressure vessel proportion of non-destructive testing and the passing level should be the main pressure vessel shell weld requirements are the same; nominal diameter of less than 250mm, wall thickness of 28mm or less done only when the surface of non-destructive testing, the quality level required for the JB4730 grade Ⅰ.
...
Sources from Pressure vessel problems with the plumbing
Keywords: reactor，pressure vessel，heat exchanger
Butt joints of pressure vessels for all (100%) or partial (20%) non-destructive testing: When using ray detection, according to the quality of its transparency not less than Class AB, which qualified for the Ⅲ grade level, and there is no welding is not allowed through; when taken ultrasound, its qualified level Ⅱ.
Of the GB150, GB151 and other standard provisions of all (100%) non-destructive testing pressure vessels, pressure vessels, the third category, the weld coefficient ⒈ 0 the pressure vessel and can not withstand internal and external inspection or testing of pressure vessels, the butt joint for all (100%) non-destructive testing: When using ray detection, according to the quality of its transparency not less than Class AB, the eligibility level for the grade Ⅱ; when using ultrasonic testing, its qualified level Ⅰ.
Equal to the nominal diameter greater than 250mm (or nominal diameter less than 250mm. The people is greater than the wall 28mm) took over the butt joints of pressure vessel proportion of non-destructive testing and the passing level should be the main pressure vessel shell weld requirements are the same; nominal diameter of less than 250mm, wall thickness of 28mm or less done only when the surface of non-destructive testing, the quality level required for the JB4730 grade Ⅰ.
...
Sources from Pressure vessel problems with the plumbing
Keywords: reactor，pressure vessel，heat exchanger
Pressure Vessels of Various Pressure
The concept of pressure vessels of various pressure
1, the working pressure: in normal operating conditions, the container at the top of the highest possible pressure. That is "content regulation" in the title of the maximum working pressure.
2, pressure vessel the maximum allowable working pressure: refers to the design temperature, thecontainer at the top of the table are the maximum allowed under the pressure. Thepressure vessel is based on the calculated effective thickness of the shell, and take the minimum.
3, nominal pressure: a pressure by the normalized value, that value by a large number of pressure levels grouped into a certain number of series, the series known as thenominal value of the pressure. Nominal pressure to PN said.
4, the design pressure vessel: refers to the top of the container set the maximum pressure,working pressure of not less than its value. Equipped with a safety relief devicepressure vessel, the design pressure of not less than the safety valve opening pressure or bursting disc burst pressure.
5, calculated pressure vessel: refers to the corresponding design temperatures, to determine the thickness of the pressure components, including liquid column static pressure.
Description: pressure vessel The design pressure of the working pressure is set based on the originalvessel design pressure is not the pressure of work. Working pressure is required by the process operating conditions, design pressure is the design temperaturetogether with the corresponding design of a container load conditions.
...
Sources from Pressure Vessels of Various Pressure
Keywords: reactor，pressure vessel，heat exchanger
1, the working pressure: in normal operating conditions, the container at the top of the highest possible pressure. That is "content regulation" in the title of the maximum working pressure.
2, pressure vessel the maximum allowable working pressure: refers to the design temperature, thecontainer at the top of the table are the maximum allowed under the pressure. Thepressure vessel is based on the calculated effective thickness of the shell, and take the minimum.
3, nominal pressure: a pressure by the normalized value, that value by a large number of pressure levels grouped into a certain number of series, the series known as thenominal value of the pressure. Nominal pressure to PN said.
4, the design pressure vessel: refers to the top of the container set the maximum pressure,working pressure of not less than its value. Equipped with a safety relief devicepressure vessel, the design pressure of not less than the safety valve opening pressure or bursting disc burst pressure.
5, calculated pressure vessel: refers to the corresponding design temperatures, to determine the thickness of the pressure components, including liquid column static pressure.
Description: pressure vessel The design pressure of the working pressure is set based on the originalvessel design pressure is not the pressure of work. Working pressure is required by the process operating conditions, design pressure is the design temperaturetogether with the corresponding design of a container load conditions.
...
Sources from Pressure Vessels of Various Pressure
Keywords: reactor，pressure vessel，heat exchanger
Categories of Pressure Vessel
By the container's role in the production category:
Reaction pressure vessel (code R): for the completion of the physical media,chemical reactions.
Heat exchanger pressure vessel (code E): for the completion of the heat exchangemedium.
Separate pressure vessel (code S): used to complete the balance of the buffer fluid pressure medium and the separation of gas purification.
Storage pressure vessel (code C, where spherical code B): used to store, dressed up gas, liquids, liquefied gases and other media.
In a pressure vessel, such as two or more processes simultaneously with the action principle, the process should be to divide the main role in the species.
According to installation Category:
Fixed pressure vessels: a fixed location to install and use, process conditions andoperating personnel are more constant pressure vessels.
Mobile Pressure Vessels: Use only under internal pressure or external pressureloading, handling process will be due to internal media impact caused by shaking,and transportation to bring the external shock and vibration loads, and therefore in the structure, use and safety side has its special requirements.
...
Sources from Categories of Pressure Vessel
Keywords: reactor，pressure vessel，heat exchanger
Reaction pressure vessel (code R): for the completion of the physical media,chemical reactions.
Heat exchanger pressure vessel (code E): for the completion of the heat exchangemedium.
Separate pressure vessel (code S): used to complete the balance of the buffer fluid pressure medium and the separation of gas purification.
Storage pressure vessel (code C, where spherical code B): used to store, dressed up gas, liquids, liquefied gases and other media.
In a pressure vessel, such as two or more processes simultaneously with the action principle, the process should be to divide the main role in the species.
According to installation Category:
Fixed pressure vessels: a fixed location to install and use, process conditions andoperating personnel are more constant pressure vessels.
Mobile Pressure Vessels: Use only under internal pressure or external pressureloading, handling process will be due to internal media impact caused by shaking,and transportation to bring the external shock and vibration loads, and therefore in the structure, use and safety side has its special requirements.
...
Sources from Categories of Pressure Vessel
Keywords: reactor，pressure vessel，heat exchanger
2011年10月16日星期日
How Volumetric heat exchanger works
The so-called volumetric heat exchanger is in fact the exchange can be adjusted within a certain volume of the switch, it has many advantages, such as automatic adjustment of pressure, heat storage, heat exchange capacity, high efficiency energy-saving features.
Automatic temperature control, energy-volume heat exchanger, which make full use of steam energy, efficiency, energy saving is a new water heater. Ordinary water of heat exchanger heat exchanger configuration is generally required to reduce the temperature of the steam condensate for reuse. The energy-saving condensing heat exchanger water temperature at 75 ℃ or so, back to the boiler room can be directly reused. This reduces equipment investment, saving heat exchanger room area, thereby reducing infrastructure costs: so energy-efficient volumetric heat exchanger unit welcomed by the majority of design users.
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Sources from Volumetric heat exchanger works
Keywords: reactor，pressure vessel，heat exchanger
Automatic temperature control, energy-volume heat exchanger, which make full use of steam energy, efficiency, energy saving is a new water heater. Ordinary water of heat exchanger heat exchanger configuration is generally required to reduce the temperature of the steam condensate for reuse. The energy-saving condensing heat exchanger water temperature at 75 ℃ or so, back to the boiler room can be directly reused. This reduces equipment investment, saving heat exchanger room area, thereby reducing infrastructure costs: so energy-efficient volumetric heat exchanger unit welcomed by the majority of design users.
...
Sources from Volumetric heat exchanger works
Keywords: reactor，pressure vessel，heat exchanger
2011年8月24日星期三
Buy Glass Lab Reactor from China
E-Commerce becomes so popular, why not search the cheapest things with the same high quality from China, this page will introduce you a hot sale glass lab reactor from China.
Introduction of whreactor Glass Lab Reactor:
There is charging pot of large diameter on the top and discharging pot at the bottom.
It is easy to operate of charging, discharging, cleaning without moving reaction bottle.Vertical mixing, resulting in three-dimensional flow, mixing more fully, can shorten the reaction time.Integrated design: reaction, heating, cooling, stirring, reflux, distillationSpecial mixing seal design allows to work long hours.
Technical parameters: 1. Reaction bottle: 10L, 20L, 30L, 50L
2.Mixing power: 220V, 90W 3. Bath pot: 220V, 4KW
Sources from http://www.whreactor.com/Product/91.aspx
Introduction of whreactor Glass Lab Reactor:
 |
| Buy Glass Lab Reactor from China |
It is easy to operate of charging, discharging, cleaning without moving reaction bottle.Vertical mixing, resulting in three-dimensional flow, mixing more fully, can shorten the reaction time.Integrated design: reaction, heating, cooling, stirring, reflux, distillationSpecial mixing seal design allows to work long hours.
Technical parameters: 1. Reaction bottle: 10L, 20L, 30L, 50L
2.Mixing power: 220V, 90W 3. Bath pot: 220V, 4KW
Sources from http://www.whreactor.com/Product/91.aspx
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